160 research outputs found

    Prompting transdisciplinary research: Promising futures for using the performance metaphor in research

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    Transdisciplinary research is increasingly recognised as important for investigating and addressing 'wicked' problems such as climate change, food insecurity and poverty, but is far from commonplace. There are structural impediments to transdisciplinarity such as university structures, publication requirements and funding preferences that perpetuate disciplinary differences and researchers often lack transdisciplinary experience and expertise. In this paper we present a heuristic that aims to encourage researchers to think about their current research as performance and then imagine different performances, with the view to encouraging reflection and creativity about the transdisciplinary potential and dilemmas. The heuristic is inspired by the metaphor of performance that Erving Goffman uses to understand everyday, face-to-face interactions. The heuristic includes scaffolding for imagining research as performance through a transdisciplinary lens, a suggested process for using the tool, and examples based on the every day research projects. The paper describes the application of the heuristic in a graduate masterclass, reflecting on whether it does indeed 'prompt' transdisciplinary research. Limitations and lessons learned for further refinement of the heuristic are also included. The authors conclude that the heuristic has a range of uses including for self-reflection, and as a practical learning tool that can also be used at the start of integrative research projects

    Medium Alt-Az Telescope Control System Standardization. A case Study: The TT1 Control System

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    The TT1 (Toppo Telescope #1) is a 1.54 m Alt-Az telescope designed and built by the Technology Working Group (TWG) of the Astronomical Observatory of Capodimonte (OAC), Naples Italy. The standardization process is of course one of the fundamental requirements for telescope control system design and development, well considered in the TT1 design. In this paper the approach used to identify a control system applicable to medium-size Alt-Az telescope is presented

    The interaction of human and Epstein–Barr virus miRNAs with Multiple Sclerosis risk loci

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    Although the causes of Multiple Sclerosis (MS) still remain largely unknown, multiple lines of evidence suggest that Epstein–Barr virus (EBV) infection may contribute to the development of MS. Here, we aimed to identify the potential contribution of EBV-encoded and host cellular miRNAs to MS pathogenesis. We identified differentially expressed host miRNAs in EBV infected B cells (LCLs) and putative host/EBV miRNA interactions with MS risk loci. We estimated the genotype effect of MS risk loci on the identified putative miRNA:mRNA interactions in silico. We found that the protective allele of MS risk SNP rs4808760 reduces the expression of hsa-mir-3188-3p. In addition, our analysis suggests that hsa-let-7b-5p may interact with ZC3HAV1 differently in LCLs compared to B cells. In vitro assays indicated that the protective allele of MS risk SNP rs10271373 increases ZC3HAV1 expression in LCLs, but not in B cells. The higher expression for the protective allele in LCLs is consistent with increased IFN response via ZC3HAV1 and so decreased immune evasion by EBV. Taken together, this provides evidence that EBV infection dysregulates the B cell miRNA machinery, including MS risk miRNAs, which may contribute to MS pathogenesis via interaction with MS risk genes either directly or indirectly

    Novel Approaches to Detect Serum Biomarkers for Clinical Response to Interferon-β Treatment in Multiple Sclerosis

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    Interferon beta (IFNβ) is the most common immunomodulatory treatment for relapsing-remitting multiple sclerosis (RRMS). However, some patients fail to respond to treatment. In this study, we identified putative clinical response markers in the serum and plasma of people with multiple sclerosis (MS) treated with IFNβ. In a discovery-driven approach, we use 2D-difference gel electrophoresis (DIGE) to identify putative clinical response markers and apply power calculations to identify the sample size required to further validate those markers. In the process we have optimized a DIGE protocol for plasma to obtain cost effective and high resolution gels for effective spot comparison. APOA1, A2M, and FIBB were identified as putative clinical response markers. Power calculations showed that the current DIGE experiment requires a minimum of 10 samples from each group to be confident of 1.5 fold difference at the p<0.05 significance level. In a complementary targeted approach, Cytometric Beadarray (CBA) analysis showed no significant difference in the serum concentration of IL-6, IL-8, MIG, Eotaxin, IP-10, MCP-1, and MIP-1α, between clinical responders and non-responders, despite the association of these proteins with IFNβ treatment in MS

    Macrophage coordination of the interferon lambda immune response

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    Lambda interferons (IFN-λs) are a major component of the innate immune defense to viruses, bacteria, and fungi. In human liver, IFN-λ not only drives antiviral responses, but also promotes inflammation and fibrosis in viral and non-viral diseases. Here we demonstrate that macrophages are primary responders to IFN-λ, uniquely positioned to bridge the gap between IFN-λ producing cells and lymphocyte populations that are not intrinsically responsive to IFN-λ. While CD14+ monocytes do not express the IFN-λ receptor, IFNLR1, sensitivity is quickly gained upon differentiation to macrophages in vitro. IFN-λ stimulates macrophage cytotoxicity and phagocytosis as well as the secretion of pro-inflammatory cytokines and interferon stimulated genes that mediate immune cell chemotaxis and effector functions. In particular, IFN-λ induced CCR5 and CXCR3 chemokines, stimulating T and NK cell migration, as well as subsequent NK cell cytotoxicity. Using immunofluorescence and cell sorting techniques, we confirmed that human liver macrophages expressing CD14 and CD68 are highly responsive to IFN-λ ex vivo. Together, these data highlight a novel role for macrophages in shaping IFN-λ dependent immune responses both directly through pro-inflammatory activity and indirectly by recruiting and activating IFN-λ unresponsive lymphocytes

    Inhibition of polyphosphoinositide phosphodiesterase by aminoglycoside antibiotics

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    The calcium-activated phosphodiesteratic hydrolysis of 32 P-labeled phosphatidylinositol 4,5-bisphosphate and phosphatidylinositol 4-phosphate in prelabeled nerve ending membranes is inhibited by the aminoglycosides neomycin and gentamicin, and to a lesser extent, by streptomycin. The inhibition is overcome by increasing concentrations of Ca 2+ , indicating that the aminoglycosides exert their effect by displacing Ca 2+ from lipid.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/45401/1/11064_2004_Article_BF00965878.pd

    The Complete Genome Sequence of the Pathogenic Intestinal Spirochete Brachyspira pilosicoli and Comparison with Other Brachyspira Genomes

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    Background: The anaerobic spirochete Brachyspira pilosicoli colonizes the large intestine of various species of birds and mammals, including humans. It causes ''intestinal spirochetosis'', a condition characterized by mild colitis, diarrhea and reduced growth. This study aimed to sequence and analyse the bacterial genome to investigate the genetic basis of its specialized ecology and virulence. Methodology/Principal Findings: The genome of B. pilosicoli 95/1000 was sequenced, assembled and compared with that of the pathogenic Brachyspira hyodysenteriae and a near-complete sequence of Brachyspira murdochii. The B. pilosicoli genome was circular, composed of 2,586,443 bp with a 27.9 mol% G+C content, and encoded 2,338 genes. The three Brachyspira species shared 1,087 genes and showed evidence of extensive genome rearrangements. Despite minor differences in predicted protein functional groups, the species had many similar features including core metabolic pathways. Genes distinguishing B. pilosicoli from B. hyodysenteriae included those for a previously undescribed bacteriophage that may be useful for genetic manipulation, for a glycine reductase complex allowing use of glycine whilst protecting from oxidative stress, and for aconitase and related enzymes in the incomplete TCA cycle, allowing glutamate synthesis and function of the cycle during oxidative stress. B. pilosicoli had substantially fewer methyl-accepting chemotaxis genes than B. hyodysenteriae and hence these species are likely to have different chemotactic responses that may help to explain their different host range and colonization sites. B. pilosicoli lacked the gene for a new putative hemolysin identified in B. hyodysenteriae WA1. Both B. pilosicoli and B. murdochii lacked the rfbBADC gene cluster found on the B. hyodysenteriae plasmid, and hence were predicted to have different lipooligosaccharide structures. Overall, B. pilosicoli 95/1000 had a variety of genes potentially contributing to virulence. Conclusions/Significance: The availability of the complete genome sequence of B. pilosicoli 95/1000 will facilitate functional genomics studies aimed at elucidating host-pathogen interactions and virulence

    Effective use of learning objects in class environments

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    This chapter provides a model to analyse the effectiveness and efficiency of Learning Objects being used in primary and secondary schools by considering their place within that educational environment, paying particular attention to the manner in which they, like any resource, can aid or occlude productive interactions between teachers and students. It draws from a study of Australian and New Zealand schools that piloted the first release of Learning Objects from the Le@rning Federation. The chapter considers the place of Learning Objects within the overall systemic school environment, and in this environment, examines the individual classroom as the combination of tensions between the teacher’s needs, the students’ needs, and the potential available within the existing infrastructure. Within this framework, the chapter discusses the ways in which these three components interact during teacher selection of Learning Objects, students’ accession of Learning Objects in the classroom, and the use of the Learning Objects by students. It concludes by suggesting how students’ construction of knowledge can be enhanced through merging the capabilities of the resource with the needs of students and teachers

    Field review of the schools online curriculum content initiative

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    The goal of The Le@rning Federation Schools Online Curriculum Content Initiative is to ensure students from Australia and New Zealand maximise the educational opportunities made possible by online technology. The Le@rning Federation has adopted a ‘learning objects model’ approach to the development of interactive multimedia computer-based resources. The potential economic advantage of learning objects is that they can be disaggregated and resequenced for different educational purposes. The Le@rning Federation was initially commissioned to develop, over five years, learning objects in the following priority curriculum areas: • Science from K–P to year 6 and for years 9–10 • Mathematics and numeracy from K–P to year 9 • Literacy for students at risk in years 5–8 • Studies of Australia from K–P to year 10 • Innovation, enterprise and creativity from K–P to year 10 • Languages other than English (Chinese, Japanese and Indonesian) from K–P to year 10
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